Sulforhodamine 101

Sulforhodamine 101
Identifiers

CAS Number	60311-02-6^Y
3D model (Jmol)	Interactive image
Beilstein Reference	3582548
ECHA InfoCard	100.056.491
PubChem CID	122180
SMILES [O-]S(C(C=C(S(O)(=O)=O)C=C1)=C1C2=C(C=C3C4=C5CCCN4CCC3)C5=[O+]C6=C(CCCN7CCC8)C7=C8C=C62)(=O)=O
Properties
Chemical formula	C₃₁H₃₀N₂O₇S₂
Molar mass	606.71 g·mol⁻¹
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y (what is ^YN ?)
Infobox references

Sulforhodamine 101 (SR101) is a red fluorescent dye. In neurophysiological experiments which comprise calcium imaging methods, it can be used for a counterstaining of astrocytes to be able to analyze data from neurons separately. However, in addition to labeling astrocytes, SR101 labels myelinating oligodendrocytes. SR101 has been reported to affect excitability of neurons and should therefore be used with caution.

A sulfonyl chloride derivative of sulforhodamine 101, known as Texas Red, is used for conjugation to a number of functional groups, especially primary amines.

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